Improvement in music-leaf turners



N. P. HALL. Music-Leaf Turners.

NO. 141,644. PatentedAug usH2,1873- wows. [kw/5Z0 '1 UNITED STATESPATENT OFFICE NORMAN P. HALL, OF JANESVILLE, WISCONSIN.

IMPROVEMENT IN MUSIC-LEAF TURNERS.

Specification forming part of Letters Patent No. 141,644, dated August12, 1873 application filed May 13, 1873.

To all whom it may concern:

Be it known that I, NORMAN I. HALL, of Janesville, in the county of Rockand State of Wisconsin, have invented an Automatic lVIusic-Turner, ofwhich the following is a specification:

My invention relates to a combination of revolving arms with adjustablefingers, to be inserted between the leaves of music, by which they areturned, at the will of the performer upon any musical instrument, bytouching a key, the arms being thereby released consecutively from thelatch by which they are held in regular order.

Figure 1 is a perspective view of the machine as it appears when in usewith the arms folded and the fingers engaging the levers. Fig. 2 is alateral view, showing the arms open, in the condition it is when themusic has just been removed after using it.

A is the base or foundation on which the music is placed, and to whichthe machinery compound latch for holding the revolving arms 13, soconstructed that the arms are al- G is a key connected lowed to passdown.

with compound latch F by a combination or series of levers, so that atouch upon said key Gr disengages the first arm and allows it to pass,and holds the others until the key is touched again, when the next armis released, and so on until all the arms have been liberated, turning aleaf at a time, at the will of the performer. The machine may have asmany of these revolving arms as may be necessary for the longest pieceof music. H is the rest, having grooves of different depths for thearms; and I a guide to the same.

I make no claim to the mode in which the leaves of a music-book areturned by means of swinging arms, nor to the upright position of thefingers when in use, for these are not new but I claim as myinvention- 1. The combination of the compound latch F, to allow the armsto pass in going down and to hold them until released, with thecombination-lever attachment and key G, substantially as and for thepurpose hereinbefore set forth.

2. In combination with the revolving arms B, the horizontal springs E,attached as described, adjustable fingers O, rests H, guides I, compoundlatch E, and combination lever and key G, all constructed and arrangedsubstantially as and for the purpose hereinbcfore set forth.

N. P. HALL. l/Vitnesses:

M. M. PHELPS, J NO. E. KENT.

